[trivial] adjust the disconnection exception detection to work correctly  with PostgreSQL 8.3, which was giving slightly different exception  messages.
[trivial] adjust the disconnection exception detection to work correctly 
with PostgreSQL 8.3, which was giving slightly different exception 
messages.

petrhosek/storm,PyMamba/mamba-storm,petrhosek/storm,PyMamba/mamba-storm,PyMamba/mamba-storm,petrhosek/storm